class Film {
  String title, openingCrawl, director, producor;
  DateTime releaseDate;

  Film(
      {this.title,
      this.openingCrawl,
      this.director,
      this.producor,
      this.releaseDate});
}

class Character {
  String name, birthYear, gender, eyeColor;
  int height;

  Character(
      {this.name, this.birthYear, this.gender, this.eyeColor, this.height});
}

class Planet {
  String name, climate, terrain, gravity, population;
  int diameter;

  Planet(
      {this.name,
      this.climate,
      this.terrain,
      this.gravity,
      this.population,
      this.diameter});
}
